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CMOS Quad, 12-Bit, Serial-Input Multiplying DAC

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Four 12-Bit Accurate DACs
  • Fast 3-Wire Serial Interface
  • Low Differential Nonlinearity: at ±½ LSB Max
  • Low Integral Nonlinearity: at ±1 LSB Max
  • Gain Accuracy to at ±1½ LSB Max
  • Low Gain Tempco: 5ppm/°C Max
  • Operates from a Single +5V Power Supply
  • TTL/CMOS Compatible
  • Available in 24-Pin DIP and 28-Pin SO Packages

Applications/Uses

  • µP-Controlled Systems
  • Arbitrary Waveform Generation (AWG)
  • Automatic Test Equipment
  • Digital Offset/Gain Adjustment
  • Industrial Process Controls
  • Motion Control Systems
  • Programmable Amplifiers/Attenuators

Description

The MAX514 contains four 12-bit R-2R multiplying digital-to-analog converters (DACs), each with a serial-in parallel-out shift register, a DAC register, and control logic. The MAX514’s 3-wire serial interface design minimizes the number of package pins and internal level translators, so it uses less board space and dissipates less power (10mW max) than parallel-interface devices.

When used with microprocessors (µPs) with a serial port, the MAX514 minimizes digital-noise feedthrough from its logic input pins to its analog output. To further reduce noise, the µP serial port can be used as a dedicated analog bus and kept inactive while the MAX514 is in use. Serial interfacing also simplifies opto-coupler or transformer-isolated applications. This device uses low-tempco thin-film resistors, laser trimmed to ±1 LSB linearity, with gain accuracy better than ±1½ LSB. The MAX514 is specified with a +5V power supply. All logic inputs are TTL and CMOS compatible. It comes in space-saving 24-pin DIP and 28-pin SO packages.

Simplified Block Diagram

MAX514: Functional Block Diagram MAX514: Functional Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .